Он хочет перепродать редкость.

In Russian, verbs like хотеть are followed directly by an infinitive.

• хочет перепродать = wants to resell
• There is no separate word like English to before the infinitive.

This is a very common pattern:

• Он хочет спать. = He wants to sleep.
• Она хочет купить книгу. = She wants to buy a book.

If the person who wants something and the person who does the action are different, Russian usually switches to a clause with чтобы:

• Он хочет, чтобы я ушёл. = He wants me to leave.

The prefix пере- here gives the idea of selling again or selling on.

• продать = to sell
• перепродать = to resell

So перепродать usually means someone got the item first and then wants to sell it to someone else.

This is a question of aspect.

• перепродать = perfective
• перепродавать = imperfective

In this sentence, перепродать suggests a single completed act: he wants to carry out the resale successfully.

If you used перепродавать, it would sound more like:

• repeated reselling,
• reselling as an activity,
• or focusing on the process rather than the completed result.

Compare:

• Он хочет перепродать редкость.
  He wants to resell the rare item.
  → one completed resale

• Он хочет перепродавать редкости.
  He wants to resell rare items.
  → more like a general business/activity

Редкость is in the accusative singular because it is the direct object of перепродать.

However, for this kind of inanimate feminine noun ending in -ость, the accusative singular looks the same as the nominative singular.

So:

• nominative: редкость
• accusative: редкость

That is why the form does not visibly change here.

For comparison, other cases do change:

• genitive: редкости
• instrumental: редкостью

Yes. Редкость can mean both:

• rarity as an abstract quality
• a rare thing / a rarity / a rare item as a concrete object

In a collector, antique, or dealer context, the concrete meaning is very natural.

That said, in some contexts Russian speakers might also use раритет for a rare collectible item. But редкость is definitely possible.

Russian has no articles like English a or the.

So редкость can mean:

• a rare item
• the rare item

Which one is meant depends on context, word order, and emphasis.

This is normal in Russian, and learners usually have to get used to relying on context instead of articles.

Yes, sometimes.

Russian often leaves out subject pronouns when the subject is already clear from context. So in conversation, you might hear:

• Хочет перепродать редкость.

if everyone already knows who he is.

But in an isolated sentence, keeping он is completely normal and often clearer.

No. Russian word order is fairly flexible.

The neutral, straightforward order is:

• Он хочет перепродать редкость.

This is a natural default sentence.

But other orders are possible for emphasis:

• Редкость он хочет перепродать.
  Emphasizes редкость

• Перепродать редкость он хочет.
  More marked; can sound contrastive or stylistically shaped

So the basic meaning stays similar, but the focus changes.

Because the sentence is talking about one rare item.

• редкость = one rarity / one rare item
• редкости = rare items / rarities

So this sentence suggests a single object. If the idea were more general, Russian would likely use the plural:

• Он хочет перепродавать редкости.

The stress is:

• Он хо́чет перепрода́ть ре́дкость.

So:

• хо́чет
• перепрода́ть
• ре́дкость

Stress matters in Russian, so it is worth learning words together with their stress.